Abstract: A spectrometric measurement method of determining concentrations of components present in a medium of a given type exhibiting different compositions in different applications includes, for at least one new application, determining a new model for determining concentrations of target components based on measured spectra of the medium of the given type present in the new application, wherein the new model is determined based on assets for determining concentrations of reference components corresponding to the target components that have been determined for reference applications, wherein the reference components have been of interest.

Abstract: A method for spectroscopic determination of at least one measured variable in a medium includes defining an application; providing a spectrometer, providing a raw spectrum; applying a calibration to the raw spectrum to obtain a calibrated spectrum; standardizing the calibrated spectrum to obtain a standardized spectrum. The standardization is performed using spectrometer-type-specific information and a transformation function, wherein the transformation function comprises the calibrated spectrum and additional measurement information as input variables and comprises a spectrometer-specific transformation function and calibration features. The method further comprises selecting, adapting, and/or creating a spectrometer-independent and application-specific model from the standardized spectrum and application-specific data; and determining the at least one measured variable from the raw spectrum using the model.

Abstract: A method of Raman spectroscopy for determining concentrations of at least one target component included in a medium including a given combination of multiple components includes: for each component of the medium, providing a reference spectrum of the component; based on Raman peaks included in the reference spectra, identifying Raman peaks that occur within less than a predetermined minimum spectral distance from each other as disturbing peaks; for each component, determining a component spectrum by eliminating each Raman peak included in the reference spectrum of the respective component identified as a disturbing peak; based on the component spectra, determining synthetic spectra of samples of the medium including different concentrations of the components; and based on the synthetic spectra, determining and providing a model for determining concentrations of each target component based on measured spectra of samples of the medium.

Abstract: A spectrometric measurement method includes: with multiple calibration light sources, exhibiting known emission spectra performing calibrations of multiple spectrometers; based on calibration data attained by these calibrations, assessing a variability exhibited by measured spectra determined by calibrated spectrometers; determining reference spectra of reference samples exhibiting known reference values of at least one measurand; based on the reference spectra and the previously assessed variability, determining synthetic spectra of reference samples exhibiting the previously assessed variability; and based on the measured reference spectra, the synthetic spectra and the corresponding reference value, determining and providing a model for determining measurement results of the at least one measurand. An analyzer for assessing the variability exhibited by measured spectra determined by calibrated spectrometers is configured to perform simulated calibrations.

Abstract: A spectrometric measurement method of, in measurement situation(s) within a predetermined application, determining measurement results of measurand(s) of a medium of an application specific type, wherein each measurement situation is predetermined by specifying at least one influencing factor affecting measured spectra in the respective measurement situation, includes: based on universal training data, determining a universal model for determining predictions of each measurand; for each measurement situation, based on the universal model and supplementary training data including at least one supplementary spectrum determined in the respective measurement situation and corresponding supplementary value(s) of each measurand, determining a dedicated model for determining measurement results of each measurand in the respective measurement situation; and based on measured spectra determined in the respective measurement situation and the dedicated model, determining measurement results of each measurand of the med

Abstract: An electro-optical adapter module includes a housing; at least one input interface with a connector on the housing, wherein the input interface is designed to be connected to a probe via a cable; an output interface with a connector on the housing, wherein the output interface is designed to be connected to a spectrometric base module; with an, for example, bidirectional, electrical connection from the input interface to the output interface; a first optical connection from the input interface to the output interface for optical input signals, for example, measurement signals; and a second optical connection from the output interface to the input interface for optical output signals, for example excitation signals.

Abstract: A method of Raman spectroscopy for determining concentrations of at least one target component included in a medium including a given combination of multiple components includes: for each component of the medium, providing a reference spectrum of the component; based on Raman peaks included in the reference spectra, identifying Raman peaks that occur within less than a predetermined minimum spectral distance from each other as disturbing peaks; for each component, determining a component spectrum by eliminating each Raman peak included in the reference spectrum of the respective component identified as a disturbing peak; based on the component spectra, determining synthetic spectra of samples of the medium including different concentrations of the components; and based on the synthetic spectra, determining and providing a model for determining concentrations of each target component based on measured spectra of samples of the medium.

Abstract: A spectrometer including: a laser light source, including a tunable diode laser with a coherent laser output, wherein the laser light source is configured to modulate the frequency of the coherent laser output; a photodetector arranged to receive the coherent laser output; at least one optical element arranged between the laser output and the photodetector; and an evaluation unit electrically connected to the photodetector. The laser light source and/or the first optical element is mounted on a movable carrier, wherein the movement of the carrier is oscillatory and changes the path length of the radiation such that interference signals are suppressed, wherein the suppression occurs due to interference between the radiation emitted from the light source and the change in the path length of the beam path due to the movement on the movable carrier.